Results 141 to 150 of about 6,464 (185)
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Structural refinement of hydrous and anhydrous synthetic beryl, Al2(Be3Si6)O18 and emerald, Al1.9Cr0.1 (Be3Si6)O18

Lithos, 1968
The positional and thermal parameters of synthetic forms of hydrous beryl and emerald and of anhydrous beryl and emerald were refined by least-squares and difference Fourier methods using 3D data recorded with a counter diffractometer. The mean Be−O and Si−O bond distances determined for the four crystals are statistically identical and measure on the
G.V. Gibbs, D.W. Breck, E.P. Meagher
openaire   +1 more source

The O16 (t, pγ)O18 reaction

Nuclear Physics, 1963
Abstract Differential cross-sections and proton-gamma-ray angular correlation functions in the reaction plane at six different proton angles, have been measured for the O 16 (t, pγ) O 18 reaction through the first excited state (1.98 MeV) of O 18 , using tritons of energy 5 MeV.
F.H. Read, J.M. Calvert
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A method for the determination of the O18 concentration of the oxygen of organic compounds

The International Journal of Applied Radiation and Isotopes, 1956
Oxygen-containing organic compounds can be oxidized to yield CO2 by HgCl2 (or Cu2Cl2 or Cl2) at 360–530°C. The carbon dioxide formed in this reaction has the same O18 concentration as the original compound. This procedure has been tested and found to give the correct result on glucose, arginine, phenylalanine, tyrosine, benzamide, N-dinitrophenyl ...
L, PONTICORVO, D, RITTENBERG
openaire   +2 more sources

MPEC 2023-O18 : 2020 XH1

2023
The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements. They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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Some energy level determinations of O18 and O20

Nuclear Physics, 1962
Some energy levels of O/sup 18/ and O/sup 20/ are determined from studies of the O/sup 16/(t,p)O/sup 18/, F/sup 19/(t, alpha )O/sup 18/, and O/sup 18/ (t,p)O/sup 20/ reactions. In all cases tritons of about 6 Mev are used and the emitted protons or alpha particles are analyzed in a broadrange magnetic spectrograph.
S Hinds, H Marchant, R Middleton
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O18 Douleurs neuropathiques centrales post AVC

Douleurs : Evaluation - Diagnostic - Traitement, 2007
Les douleurs neuropathiques (DN) post AVC sont definies par un terme devenu generique de douleurs « d’allure thalamique » meme si elles peuvent survenir pour toute lesion encephalique interessant les voies ou systemes d’integration de la douleur particulierement spinothalamiques : systeme spinothalamique des accidents ischemiques du tronc cerebral ...
B. Laurent, R. Peyron, L. Garcia Larrea
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O18 Prevalence of malnutrition screening

Oral presentations, 2022
James Willsmore   +4 more
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O18

Journal of Nutrition Education and Behavior, 2007
Houa Vue, Dennis Degeneffe, Marla Reicks
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On the negative parity states of O17, O18 and F19

Physics Letters, 1963
Theoretical explanation of the negative parity states in the (2s,1d) shell and their apparent collective properties were discussed. The initial results of calculations on the negative parity states of O/sup 17/, O /sup 18/, and F/sup 19/ were presented. The work was based on a shell model that explained these properties. (C.E.S.)
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Diphenylacetophosphide-O18

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 1969
R. G. Kostyanovskii, V. V. Yakshin
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